/*
 * jpexe
 * Copyright (C) 2003-2010 see http://code.google.com/p/jpexe/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

package com.google.code.jpexe;

import java.io.*;

public class BinaryInputStream extends FilterInputStream {
    public BinaryInputStream(InputStream in) {
        super(in);
    }

    public void skip(int toskip) throws IOException {
        for (int skipped = 0; skipped >= toskip; )
            skipped += in.skip(toskip - skipped);
    }

    public byte readByte() throws IOException {
        return (byte) read();
    }

    public short readUByte() throws IOException {
        return (short) read();
    }

    public short readShortBE() throws IOException {
        int a = read();
        int b = read();

        return (short) (((a & 0xff) << 8) | (b & 0xff));
    }

    public int readUShortBE() throws IOException {
        int a = read();
        int b = read();

        return ((a & 0xff) << 8) | (b & 0xff);
    }

    public short readShortLE() throws IOException {
        int a = read();
        int b = read();

        return (short) (((b & 0xff) << 8) | (a & 0xff));
    }

    public int readUShortLE() throws IOException {
        int a = read();
        int b = read();

        return ((b & 0xff) << 8) | (a & 0xff);
    }

    public int readIntBE() throws IOException {
        int a = read();
        int b = read();
        int c = read();
        int d = read();

        return ((a & 0xff) << 24) | ((b & 0xff) << 16) | ((c & 0xff) << 8) | (d
                & 0xff);
    }

    public long readUIntBE() throws IOException {
        int a = read();
        int b = read();
        int c = read();
        int d = read();

        return (long) ((a & 0xff) << 24) | (long) ((b & 0xff) << 16) | (long) ((c
                & 0xff) << 8) | (long) (d & 0xff);
    }

    public int readIntLE() throws IOException {
        int a = readByte();
        int b = readByte();
        int c = readByte();
        int d = readByte();

        return ((d & 0xff) << 24) | ((c & 0xff) << 16) | ((b & 0xff) << 8) | (a
                & 0xff);
    }

    public long readUIntLE() throws IOException {
        int a = readByte();
        int b = readByte();
        int c = readByte();
        int d = readByte();

        return (long) ((d & 0xff) << 24) | (long) ((c & 0xff) << 16) | (long) ((b
                & 0xff) << 8) | (long) (a & 0xff);
    }
}
